Furnace door



5 Sheets-Sheet H. BJ SEERY FURNAGE DQOR Filed Dec. 25. 195o Jam 3, 1933.

WITNESS:

Jan. 3, 1933. H. B. SEERY 1,893,449

FURNACE DOOR Filed Deo. 23, 1930 5 sheets-Sheet 5 INVENTOR ATTORNEY Patented Jan. k3, 1933 l HowAnn ze. sEERY, or rNcoLN PLAGE, riiNNsYLvaNrAn nUnNAcE noon f' i y Application med December, 2a, 1930. serial No.. 504,354.

rlhis invention relates to furnace doors for,

mill furnaces and its general object is to provide a furnacedoor that will notonly withstand heat to a I'naximumintensityv for a prolong period of time without becomingwarped or *otherwise` damaged, butin the event of damage thereto,.can be repaired, rebuilt o r replaced ink an easy and expeditious 'manner' by unskilled labor and inminimum time. 10 Another object-of theinvention is to provide a furnace door of the character set forth, that includes interitting fire brick-,that face the heat of the furnace and can be associated with a frame and each other in a manner whereby casualdispla'cement or removal of the brick from its frame is practically impossible. Y lf Y Another object ofthe invention-,is to proconstruction, inexpensive and easy to manufacture, and extremelyfeiicient in operation and service.

Y This invention also consists in certain other features of construction and in the combination andV arrangement of `the several parts, to be hereinafterfully described, illustrated in the accompanying drawingsV and specifically pointed out in the appended claims.

In vdescribing my invention indetail, ref.'-

erence will fbe had to the accompanying mately on line 114-4. ofFigure 1,'l'ooking lin the direction of thearrows.- Y 45 Figure 5 isa sectional view taken approximately on line 5--5 of Figure l.`

vFigure Y6 is a lperspective view ofiwhat. I

term the cap Ablock of my door.

vide a furnace door that is reasonably simple Figure I is a similarview of one type of Figure {Sfis a sectional View of another of blockused inthe construction of my door.`

Figure QA isA a similar view of a furthertype or shape of block;v

j Figure 10 1s a sectional view taken approxiy matelygon line lO-,lO of Figure 1.

Figure 1l is a sectional. view takenfapproximately'on line ll--ll of Figure 1.l

Referringto the drawings indetail, the ref,- erence numeral li indicates a fframe which Vmay be castin a single-piece or madeup of strips` asshown, and this `Vframe vis substantially rectangular in formatiomjbut is prO.-

vided -with a curved upper portion while the i sides andbottom are straight. The v frame as shownis made .up of a lower or base strip'Q,

side strips 3 and an-'upper strip 4. The lower Y or base strip includes upstanding lends which together 'with the depending endsandthe A' Y ends of the side strips are rec`essed,7and these recessed ends aredisposed in overlapping as-..

sociation and secured together. The stripsv V2", 3 and L are substantially L-shape in cross section. e. Y Y

`Bridging the side strips andir having their ends secured thereto` are horizontal A.intermediate strips 5, whileiverticalintermediate .n Y strips 6 have their ends secured to the upper and lower strips and the verticalpstripsnare secured intermediate their ends, intermediate' the ends ofthe horizontal'stri-ps.-

The securing means for the strips are the form of rivets or the like and formed parent.

turedears'9 arrangedeinZ pairs. Theseears may be'termedY lifting lugs and receive means for raising and lowering the door@V 'y Thejlowe'r edge of the frame 11's Awith a depending` liange l0: extending longi-- l tudinally of saidedge and'allows for the door Y with the uppermostv horizontal intermediate'- strip is a lufg f? adapted for the use ofreceiving a hook orlilre means cfa hoisting devicev when it isdesired to handle the door.` infre-fY moving or replacing thegsame as Willbe ap-.

ico

to fit in Close to the door opening of the furpresently apparent, and the upper portion of that they will have interlocking engagement` the frame l is also provided with a slot l2 that is closed by a cap block which will be later described.

That part of the face of the door which' forms the sub'ect matterof-the resent inl l)A vention is made up entirely of blocks [as will be noted upon inspection of Figure 2, andthese blocks are formed 'from heat Vresisting ,ina-p terial and are of a particular construction so with each'otherfto prevent casual displacementv` thereof as well as a continuous heat resist-ing surface. In Figure 7 I have illustrated one type of block used in Vmaking this heat resisting surface and this type of block includesy a body portion 13 having a longitudinally arranged groove I4 disposed in the top thereof, and the longitudinally arranged tongue l5 extending throughout the length of the bottom thereof.'

Formed with and extending from one side of the body portion 131is a substantially T- shaped projection l6 and this projection by n being of the shape indicated provides recessesV 17 for the purpose of accommodating the inwardly extending'portions of the respect-ive strips when the blocks are arranged in yrow formation as best shown in Figure 4.

The blocks as shown in Figure 8 are made in various sizes, vbut regardless of the size,

. thereof and a tongue 19 eachl'is provided with I distinction are indicated by the reference numeral 20 are parallelandthese blocks are utilized for filling purposes onfthe'inner side of the intermediatefstrips as is also shown in Figure' t as well as in Figures 3 and lO.V

5 The block of the type as'shown in Figure-9 is also made in'varlous sizes vand includes-at least fone inclined side such-as indicated by`A the reference numeral 2l, and this inclined side is provided with a groove22. Depend-v ing from the bottom of the block as shownin VFigure 9 and which for distinction is indi-y cated by the reference numeral 23, is a tonguev Ihe cap lock isV shown in Figure 6, and includes a curved upper portion 25, andabody portion 26 the latter having inclined ends as' shown, and these ends as well as the bottom of the body portion is provided withatongue In forming the heat resisting surface of the door with the blocks, it will be noted that blocks of the type as shown in Figure 8 are arranged along the lower portion of the frame l, with the tongues thereof disposed within the groove of the lower portion as shown in Figure 4.-. Two layers of these blocks 20 are provided, thence the blocks asshown in Figure 7 are used in view of the vertical intermediate strips 6, the T-shape projections having ,their outer `ends disposed in overlapping engagementr with thev vertical intermediate strips which are disposed in the recesses 17 as indicated in Figure l. Cooperating with the blocks as shown in Figure 7 and disposed betvveenthe same are relatively small blocks of the type as shown in Figure 8, and-these last'mfenti'oned blocks are arranged between tl'ie'blocks'asshown in Figure 7 inthe outer spaces only, which lare disposed between the outermost strips' 6 and the side strips 3.Y The blocks' as shown inFigure 7 and the relative small blocks Vare used until the 'horizontal intermediate stripjis reached, thence the blocks 2O are'used until the surfacev isbuilt above the strip 5,`at which time the blocks are shown in vFigure 7 ,Y as well 'asV the relative small blocks are again'used'until'the upper- ,most strip 5 Vis reached and this process is continued until the height of the bloclrsreach the curved upperportion of the frame l,

whereupon it becomes'nece'ssary to'use blocks; of the type as shown in Figure 9, and these blocks-which are indicated bythe reference numeral 23 are cut to fit the various spaces between the curved upper portion and the adjacentblocks. In building the heat resisting surface, it will be obvious that the tonguesv f of the uppermost blocksV are arranged in the grooves o f theblocks below the same as shown in Figures 3,l 4 and 10. 7'

The ends of the slot l2 are inclined to lit the ends of the curved upper` portion of the cap block, and when the remaining blocks are associated Within the conines of the walls of the frame l and the strips, the cap block is positioned as shown in Figure 2 and held accord-` ingly through the medium of pins 28, which rise from the top of the-upper portion .upon opposite sides of theslot l2, these pins 28 are received in bores 'provided lin the curved upper portion 25'. Slots are disposed in the pins 28 adjacentthe upper ends thereof and these slots are adapted to receive wedge members 29 that engage the cap block as shown.

' F romv the above description'and disclosure of the drawings, it will be obvious that I have provided a furnace door that has a heat resisting surface made up of blocks composed of lire proof material due to theV interlocking engagement of the respective blocks, it will be apparent that casual separation vof the blocks will'be'reducedtoa minimum and'by utilizing the blocks, it will be further' app arent that v the door can be easily repaired or rebui l t,v'as;

in the event that one or more blocks should become broken, they can be replaced in minimum time and with very little el'fort.

It is thought from the foregoing description that the advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims. f

What I claim is: A

l. A furnace door comprising a frame, blocks formed from lire proof'material and arranged in superposed relation with respect to each other, means for securing the blocks together1 and to the frame respectively, andy a cap block for holding the lirst mentioned blocks in operative association.

2. A furnace door comprising a frame, blocks formed from iire proof material and arranged in said frame in superposed relation, said blocks being of various shapes and sizes for fitting eng-agement with each other and the frame, said frame having a slot in the upper portion thereof, a cap block having a portion arranged in said slot for holding the remaining blocks in operative association, and means for securing said cap block to said frame. Y

3. A furnace door comprising a frame including upper and lower strips, side strips secured to the upper and lower strips, intermediate` strips secured to the upper and lower and to the side strips respectively, blocks having grooves arranged longitudinally thereof, tongues formed on said blocks and being received in said grooves in a manner whereby the blocks are disposed in superposed relation within the frame, some of said blocks having T-sha-pe projections to accommodate portions of the strips, and a cap block secured to the upper portion of the frame for holding the remaining blocks in cooperative association.

fl. A furnace door Comprising a frame including upper and lower strips, side strips secured to the upper and lower strips, intermediate strips bridging and secured to the upper and lower and to the side strips and to each other respectively, blocks formed from fire proof material and being of various shapes and sizes for fitting engagement with each other and the spaces between the strips, said blocks being tongued and grooved for interfitting relation with respect to each other and the frame respectively, and a cap block secured to said frame for holding the remaining blocks in cooperative association.

5. A furnace door comprising a frame including a curved upper portion Vhaving a slot arranged centrally therein, ribs depending from the curved upper portion, a straight lower portion Vfor said frame and having a groove disposed longitudinally therein, side members, and a plurality of vertical and horizontal strips secured between the upper and lower and between the side members respectively, blocks formed from fire proof material and arranged in superposed relation, said blocks having grooves formed in the upper surface thereof, tongues depending from the lower surfaces of said blocks, the tongue of one block being arranged in the groove of its adjacent block, the lowermost blocks having their tongues disposed in the groove of the lower portion of the frame, the uppermost blocks having the ribs of the upper portion of the frame received in the grooves thereof, some of said blocks being shaped to receive portions of the strips for interlocking engagement therewith, a cap block for securing the remaining blocks in cooperative association, and having a portion disposed in the slot.

In testimony whereof I affix my signature.

HOWARD B. SEERY. 

